Super hard network week news review (11.7~11.11)
Abstract [Association News] The grand opening of the Super-Guiyang Conference in 2016: Bringing together the wisdom exchange academic (Read the full text) On the morning of November 10th, the 20th China Superhard Materials Technology Development Forum and “Celebrating the 50th Anniversary of the Birth of China's Cubic Boron Nitride The conference" in the new world of Guiyang, Guizhou Province...
1. Grand Opening of the Super-Cosmos Conference in 2016: Bringing together wisdom and exchange of academics (Read the full text)
In order to commemorate the 50th anniversary of the birth of China's cubic boron nitride, in order to better guide enterprises to adjust the structure in the new situation, promote growth, and maintain the healthy and orderly development of the industry, this conference specially prepared three major themes: "China Cube" The development of boron nitride for 50 years, the research history and technology development trend of China's cubic boron nitride abrasive tools, and the history and current status and prospects of PCBN material tools in China.
2, "Superhard Abrasives Manufacturing and Application" officially published (Read the full text)
Recently, the book "Preparation and Application of Superhard Abrasives" edited by Professor Wang Guangzu and Li Jinbao, Chairman of Jiangxi Yubao Diamond Tools Co., Ltd. was officially published by Zhengzhou University Press.
The book is reviewed and prospected by the first chapter of superhard material abrasives, the second chapter diamond grinding abrasives, the third chapter cubic boron nitride abrasives, the fourth chapter superhard material coated abrasives and the fifth chapter related technology (Gathering) products and other components.
The book is reviewed and prospected by the first chapter of superhard material abrasives, the second chapter diamond grinding abrasives, the third chapter cubic boron nitride abrasives, the fourth chapter superhard material coated abrasives and the fifth chapter related technology (Gathering) products and other components.
Professor Wang Guangzu introduced in the preface of this book: "This book should become a gathering place for the scientific and technological achievements of the developers of superhard material abrasives and their technological research and development, theoretical discussion and related technology research, and a treasure trove of knowledge and wisdom. The engine of technical information, based on such an idea, has carried out the work of collecting, reading, extracting and editing data. The main source of information: the review and prospect of the development of superhard materials and abrasive materials is based on the "Fifty Years of China's Superhard Materials Industry" The second article is the ninth chapter of superhard material abrasive tools; the diamond grinding tool is based on the "abrasive material manufacturing and application technology" chapter 14 diamond grinding tools, Professor Li Yinjiang added some content; other chapter materials are mainly drawn In the past ten years, "Diamond and Abrasives Engineering", "Superhard Materials Engineering" and other super-hard industry core journals and super-hard industry technical seminars, etc. Liu Jinchang, senior consultant of China Superhard Materials Network, has taken the whole book seriously. A meticulous review, in the process of writing, also obtained China Superhard Materials Network, China Grinding, Henan Iger Material Abrasives Co., Ltd. enthusiastic support. "
3. The new nano-diamond structure is expected to realize the quantum computing process ahead of time (Read the full text) American researchers have successfully developed a new structure for nanodiamonds, and plan to work with governments and companies to explore new nanodiamond self-assembly systems to produce this innovative and low-cost new component for quantum computers.
This new structure contains a nitrogen atom and an atomic vacancy. It can be applied to quantum calculations at room temperature, single photon sensors and non-toxic fluorescent biomarkers.
Diamond consists of a myriad of diamond crystals, usually containing five carbon atoms per crystal. Scientists at North Carolina State University use the latest technology to make crystals contain only two carbon atoms. The remaining three positions are atomic vacancies, one carbon-13 atom (a stable isotope of carbon), and a nitrogen atom.
4, polysilicon surface texturing technology research (Read the full text)
Abstract: The photovoltaic industry plays an important role in the development of new energy. At present, polycrystalline silicon solar cells have become the mainstream of the solar cell market. The quality of the surface of the silicon wafer has an important influence on the conversion efficiency of the solar cell, and the surface-texturing technology of the polysilicon is also receiving more and more attention from all over the world. Mastering the principles and characteristics of polysilicon surface texturing technology is very important to improve the quality of surface suede. Firstly, the technical requirements of the surface of the polysilicon are analyzed. Then, according to different technical principles, the dry-texturing technology, the wet-texturing technology and the masking and texturing technology are reviewed in detail. The technical characteristics of different texturing technologies are analyzed in detail and their applications are expounded. In the example, the polysilicon velvet technology was reviewed from the aspects of suede quality, texturing efficiency, cost and environmental protection. Finally, the development trend of polysilicon velvet technology was predicted.
Introduction: Solar energy is the most important clean renewable energy source. It is estimated that by 2040, the total installed capacity of solar energy will account for 15%-20% of the global power generation [1]. According to the “Photovoltaic Eight Articles†issued by the State Council in 2013, the installed capacity of photovoltaic power generation will reach 35GW in 2015, accounting for 2.4% of the total installed capacity [2]. The key to large-scale utilization of solar power is to produce low-cost, high-efficiency solar cells. The drawing process of single crystal silicon is complicated, and the cost of silicon material is high. The ingot casting process of polycrystalline silicon is simple, and the utilization rate of square ingot silicon material is high, which significantly reduces the cost. At present, more than 98% of photovoltaic cells in the international market are For polycrystalline silicon solar cells [3].
5, the new discovery - GaN hardness super diamond (Read the full text)
Currently, gallium nitride (GaN) has become one of the most important and widely used semiconductor materials. Its optoelectronic and mechanical properties make it ideal for a wide range of applications, including light-emitting diodes, high-temperature transistors, sensors, and electronic implants that are biocompatible with the human body.
Diamond consists of a myriad of diamond crystals, usually containing five carbon atoms per crystal. Scientists at North Carolina State University use the latest technology to make crystals contain only two carbon atoms. The remaining three positions are atomic vacancies, one carbon-13 atom (a stable isotope of carbon), and a nitrogen atom.
4, polysilicon surface texturing technology research (Read the full text)
Abstract: The photovoltaic industry plays an important role in the development of new energy. At present, polycrystalline silicon solar cells have become the mainstream of the solar cell market. The quality of the surface of the silicon wafer has an important influence on the conversion efficiency of the solar cell, and the surface-texturing technology of the polysilicon is also receiving more and more attention from all over the world. Mastering the principles and characteristics of polysilicon surface texturing technology is very important to improve the quality of surface suede. Firstly, the technical requirements of the surface of the polysilicon are analyzed. Then, according to different technical principles, the dry-texturing technology, the wet-texturing technology and the masking and texturing technology are reviewed in detail. The technical characteristics of different texturing technologies are analyzed in detail and their applications are expounded. In the example, the polysilicon velvet technology was reviewed from the aspects of suede quality, texturing efficiency, cost and environmental protection. Finally, the development trend of polysilicon velvet technology was predicted.
Introduction: Solar energy is the most important clean renewable energy source. It is estimated that by 2040, the total installed capacity of solar energy will account for 15%-20% of the global power generation [1]. According to the “Photovoltaic Eight Articles†issued by the State Council in 2013, the installed capacity of photovoltaic power generation will reach 35GW in 2015, accounting for 2.4% of the total installed capacity [2]. The key to large-scale utilization of solar power is to produce low-cost, high-efficiency solar cells. The drawing process of single crystal silicon is complicated, and the cost of silicon material is high. The ingot casting process of polycrystalline silicon is simple, and the utilization rate of square ingot silicon material is high, which significantly reduces the cost. At present, more than 98% of photovoltaic cells in the international market are For polycrystalline silicon solar cells [3].
5, the new discovery - GaN hardness super diamond (Read the full text)
Currently, gallium nitride (GaN) has become one of the most important and widely used semiconductor materials. Its optoelectronic and mechanical properties make it ideal for a wide range of applications, including light-emitting diodes, high-temperature transistors, sensors, and electronic implants that are biocompatible with the human body.
Three Japanese scientists won the 2014 Nobel Prize in Physics for discovering the important role of GaN in producing blue LED lamps. Combining red and green light to produce a white LED source, blue light is essential.
Recently, four engineers at Lehigh University reported a previously unknown property of GaN: its wear resistance is close to that of diamonds, and it is a high-speed, high-vibration technology application for touch screens, space vehicles and RF MEMS. Open up new markets.
6, Huajing micro-drilling to open the first VAT special invoice to enjoy multiple benefits (read the full text) Recently, four engineers at Lehigh University reported a previously unknown property of GaN: its wear resistance is close to that of diamonds, and it is a high-speed, high-vibration technology application for touch screens, space vehicles and RF MEMS. Open up new markets.
On November 3, as a pilot enterprise of VAT general taxpayers, Henan Province Yuxing Huajing Microdrill Co., Ltd., located in Zhengzhou Export Processing Zone, issued the first special VAT invoice. On the same day, Zhengzhou Customs handled the domestic sales of 10,000 carats of synthetic diamond powder for the company, involving a value of 2735.04 yuan and a tax of 464.96 yuan. This marked the successful launch of the pilot program for the general taxpayer qualification in the special supervision area of ​​Henan Customs.
On the 3rd of November, as the pilot enterprise of VAT general taxpayers, Henan Province Yuxing Huajing Microdrill Co., Ltd., located in Zhengzhou Export Processing Zone, issued the first special VAT invoice. On the same day, Zhengzhou Customs handled the domestic sales of 10,000 carats of synthetic diamond powder for the company, involving a value of 2735.04 yuan and a tax of 464.96 yuan. This marked the successful launch of the pilot program for the general taxpayer qualification in the special supervision area of ​​Henan Customs.
On October 14, the State Administration of Taxation, the Ministry of Finance, and the General Administration of Customs jointly issued an announcement to initiate the pilot work of granting general taxpayer qualifications to enterprises in special customs supervision areas. The country approved the establishment of seven pilots, and Zhengzhou Export Processing Zone and Xinzheng Comprehensive Insurance Zone were among them. It is reported that the pilot enterprises will enjoy multiple benefits from the date of their entry into force. On the one hand, enterprises in the special customs supervision area can continue to carry out bonded processing business, on the other hand, they can obtain or issue special VAT invoices like ordinary domestic and foreign enterprises.
7. Sanmao was awarded the first batch of industrial technology basic public service platform in Henan Province (Read the full text)
Recently, the list of the first batch of industrial technology basic public service platforms in Henan Province was announced. Zhengzhou Abrasives Grinding Research Institute Co., Ltd. (Sanmao) was successfully selected for its own test and inspection capabilities.
Industrial technology basic public service platform is to provide quality reliability test verification, standard verification and testing, measurement and testing, certification and accreditation key technologies, industry information and knowledge for technological innovation and industrial sustainable development in key areas of industry, communication industry and information technology. The platform of basic support and public service such as property rights is divided into two types: test and information service, which are organized and reviewed by the Henan Provincial Industry and Information Technology Committee.
8, amazing! The other side of the 2016 Super Association Guiyang Conference (Read the full text)
On November 10th, 2016, the 20th China Superhard Materials Technology Development Forum and the “Celebration of the 50th Anniversary of the Birth of China's CBN†were grandly opened. More than 200 industry leaders, experts, scholars and representatives from enterprises from all over the country attended the conference. In order to better display the technological development strength and product innovation achievements of China's superhard materials industry, many companies have displayed the most eye-catching quality products, showing the more exciting side of this technology development forum.
9. Study on thermal conductivity of boron-doped single crystal HPHT synthetic diamond in the range of 20-400 Kelvin (Read the full text)
Abstract: A comparative study of boron-doped single crystal HPHT synthetic diamond (BDD) and high-purity IIa synthetic diamond was carried out in the range of 20-400 Kelvin. The boron doping concentration in BDD is about 1019 cm-3, which is the representative value of the concentration of the p+ substrate material in the power device device. At about 100 degrees Kelvin, the thermal conductivity of BDD is less than about 10 times that of the type IIa diamond, but below room temperature, the difference is less than 30%. The deviation observed in the experimental observation is mainly caused by the phonon scattering caused by the extended structural defects of the high concentration boron-doped synthetic diamond.
Introduction: Diamond materials have excellent properties such as high hardness, good optical transparency and high thermal conductivity. The thermal conductivity is up to 10000 W/(mK) at around 100 K and the thermal conductivity is up to 2500 W/(mK) at room temperature. At present, artificial single crystal diamond is widely used in optical, X-ray, optoelectronic and electronic equipment. In particular, high-purity IIa synthetic diamond is an excellent material for X-ray mirrors in high-power short-wave free-electron laser equipment. Boron-doped Type IIb synthetic diamond (BDD) is a typical P-type semiconductor material used in high-power high-frequency high-temperature electronic equipment. In the above two equipment fields, thermal conductivity is a key parameter affecting equipment design, while the research on BDD thermal conductivity is currently less.
10. Amazing changes in global manufacturing costs (Read the full story)
Introduction: In the past three decades, the US economy has been in a good stage, and the roughly divergent worldview has influenced the investment and purchasing decisions of manufacturing companies. Most of Latin America, Eastern Europe and Asia are considered low-cost regions, while the United States, Western Europe and Japan are considered high-cost regions. But this worldview seems to be out of date now.
The subtle changes in wages, productivity, energy costs, monetary value, and other factors year after year have quietly and dramatically affected the “global manufacturing cost competitiveness†map. The new map encompasses the intricacies of low-cost economies, high-cost economies, and a large number of economies in between.
The change in relative costs is surprising. Ten years ago, who would have thought that Brazil is now one of the most expensive manufacturing economies or that Mexico’s manufacturing costs will be lower than China’s? Although London is still the world's highest price for living and tourism, the UK has become the lowest cost economy in Western Europe. Manufacturing costs in Russia and Eastern Europe have risen to almost the same level as the United States.
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