摘要:
The present invention relates to a method for producing colorless, single-crystal diamonds at a rapid growth rate. The method for diamond production includes controlling temperature of a growth surface of the diamond such that all temperature gradients across the growth surface of the diamond are less than about 20° C., and growing single-crystal diamond by microwave plasma chemical vapor deposition on the growth surface of a diamond at a growth temperature in a deposition chamber having an atmosphere, wherein the atmosphere comprises from about 8% to about 20% CH4 per unit of H2 and from about 5 to about 25% O2 per unit of CH4. The method of the invention can produce diamonds larger than 10 carats. Growth rates using the method of the invention can be greater than 50 μm/hour.
摘要:
A single crystal diamond grown by microwave plasma chemical vapor deposition annealed at pressures in excess of 4.0 GPa and heated to temperature in excess of 1500 degrees C. that has a hardness of greater than 120 GPa. A method for manufacture a hard single crystal diamond includes growing a single crystal diamond and annealing the single crystal diamond at pressures in excess of 4.0 GPa and a temperature in excess of 1500 degrees C. to have a hardness in excess of 120 GPa.
摘要:
A single crystal diamond grown by microwave plasma chemical vapor deposition has a hardness of 50-90 GPa and a fracture toughness of 11-20 MPa m1/2. A method for growing a single crystal diamond includes placing a seed diamond in a holder; and growing single crystal diamond at a temperature of about 1000° C. to about 1100° C. such that the single crystal diamond has a fracture toughness of 11-20 MPa m1/2.
摘要翻译:通过微波等离子体化学气相沉积生长的单晶金刚石的硬度为50-90GPa,断裂韧性为11-20MPa m 1/2。 生长单晶钻石的方法包括将种子金刚石放置在支架中; 以及在约1000℃至约1100℃的温度下生长的单晶金刚石,使得单晶金刚石的断裂韧性为11-20MPa m 1/2。
摘要:
The present invention is directed to new uses and applications for colorless, single-crystal diamonds produced at a rapid growth rate. The present invention is also directed to methods for producing single crystal diamonds of varying color at a rapid growth rate and new uses and applications for such single-crystal, colored diamonds.
摘要:
A single crystal diamond grown by microwave plasma chemical vapor deposition annealed at pressures in excess of 4.0 GPa and heated to temperature in excess of 1500 degrees C. that has a hardness of greater than 120 GPa. A method for manufacture a hard single crystal diamond includes growing a single crystal diamond and annealing the single crystal diamond at pressures in excess of 4.0 GPa and a temperature in excess of 1500 degrees C. to have a hardness in excess of 120 GPa.
摘要:
A video recording/reproducing apparatus comprises a receiver which receives a broadcast program, an acquiring unit which acquires program information of the broadcast program, a recording unit which records the broadcast program received by the receiver together with the program information acquired by the acquiring unit, a selector which selects a type of the program, and a searching unit which searches a latest program of the type selected by the selector based on the program information acquired by the acquiring unit and the program information recorded by the recording unit.
摘要:
A method to improve the optical clarity of CVD diamond where the CVD diamond is single crystal CVD diamond, by raising the CVD diamond to a set temperature of at least 1500 degrees C. and a pressure of at least 4.0 GPa outside of the diamond stable phase.
摘要:
A method to improve the optical clarity of CVD diamond where the CVD diamond is single crystal CVD diamond, by raising the CVD diamond to a set temperature of at least 1500 degrees C. and a pressure of at least 4.0 GPa outside of the diamond stable phase.
摘要:
A single crystal diamond grown by microwave plasma chemical vapor deposition has a hardness of 50-90 GPa and a fracture toughness of 11-20 MPa m1/2. A method for growing a single crystal diamond includes placing a seed diamond in a holder; and growing single crystal diamond at a temperature of about 1000° C. to about 1100° C. such that the single crystal diamond has a fracture toughness of 11-20 MPa m1/2.
摘要翻译:通过微波等离子体化学气相沉积生长的单晶金刚石具有50-90GPa的硬度和11-20MPa m 1/2的断裂韧性。 生长单晶钻石的方法包括将种子金刚石放置在支架中; 以及在约1000℃至约1100℃的温度下生长的单晶金刚石,使得单晶金刚石的断裂韧性为11-20MPa m 1/2。
摘要:
The invention relates to a single crystal boron doped CVD diamond that has a toughness of at least about 22 MPa m1/2. The invention further relates to a method of manufacturing single crystal boron doped CVD diamond. The growth rate of the diamond can be from about 20-100 μm/h.