Results 31 to 40 of about 5,777 (160)
Superconductivity in polycrystalline diamond thin films [PDF]
Diamond and Related Materials, 2005 Superconductivity was discovered in heavily boron-doped diamond thin films deposited by the microwave plasma assisted chemical vapor deposition (MPCVD) method. Advantages of the MPCVD deposited diamond are the controllability of boron concentration in a wide range, and a high boron concentration, especially in (111) oriented films, compared to that of ...
Takano, Yoshihiko +6 more
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Alumina-bonded nano-polycrystalline diamond powder synthesized by detonation sintering
Jin'gangshi yu moliao moju gongcheng, 2019 Alumina-bonded nano-polycrystalline diamond was synthesized by detonation sintering. The thermal stability, morphology and crystal structure are analyzed by thermogravimetric analyzer (TGA), scanning electron microscope (SEM) and transmission electron ...
YAN Xianrong +5 more
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Mechanical lapping and polishing process of polycrystalline diamond wafers
Jin'gangshi yu moliao moju gongchengObjectivesDiamond is a critical material potentially or already applied in infrared windows, electronic components and acoustic devices for its excellent optical transmittance, high eletron mobility and high breakdown voltage.
Jiao LI +4 more
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Synthesizing bulk polycrystalline diamond by method of direct phase transition
Jin'gangshi yu moliao moju gongcheng, 2018 Pure-phase bulk polycrystalline diamonds are prepared through direct phase transition at ultrahigh pressure and high temperature. The phase composition and microstructure of the pure-phase bulk polycrystalline diamonds are studied by SEM, XRD and Raman ...
WANG Haikuo +7 more
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Specific Internal Structure of Diamonds from Zarnitsa Kimberlite Pipe
Crystals, 2017 The Zarnitsa kimberlite pipe is one of the largest pipes of the Yakutian diamondiferous province. Currently, some limited published data exists on the diamonds from this deposit.
Alexey Ragozin +3 more
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Research status of grain interface in polycrystalline diamond with different binders
Jin'gangshi yu moliao moju gongcheng, 2017 There are many factors affecting the performance of PCD, the most important is the interface bonding of binder and diamond grain.The paper summarizes the performance of metal binder such as Co, Ni and nonmetal binder such as Si, B in the presence of ...
HENG Jun +5 more
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CrystalsIn this study, three different substrate holder shapes—trapezoidal, circular frustum, and adjustable cyclic—were designed and optimized to enhance the quality of polycrystalline diamond films grown using microwave plasma chemical vapor deposition (MPCVD).
Shuai Wu +8 more
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Sintering super-strong micro-grained polycrystallinediamond compacts under ultrahigh pressure
Jin'gangshi yu moliao moju gongcheng, 2018 Using micro-grained diamond powder as starting material, centimeter-sized super-strong micro-grained polycrystalline diamond (MPD) compacts have been prepared under about 15 GPa with a lab-designed two-stage 6-8 type multi-anvil large volume high ...
LIU Jin, HE Duanwei
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Highly efficient polishing of polycrystalline CVD diamond via atmosphere inductively coupled plasma
Jin'gangshi yu moliao moju gongchengObjectives: As a typical difficult-to-machine material, polycrystalline CVD diamond often requires sophisticated and time-consuming polishing methods to achieve a smooth surface.
Yuxi XIAO +3 more
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Механика машин, механизмов и материалов, 2018 A physical model of the process of structure formation of a polycrystalline superhard material is presented with a bimodal structure based on diamond micro- and nanopowders after their preliminary modification by carbide-forming elements. Proposed model
Victor I. Zhornik +2 more
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