| 摘要 |
Diamond crystals are produced by subjecting to elevated temperatures and pressures a mixture of a nondiamond form of carbon together with a mixture or alloy of nickel and phosphorus, which serves as the solvent and catalyst for the conversion to diamond form. Use of nickel and phosphorus for solvent and catalyst allows conversion of nondiamond carbon to diamond at lower pressures than previously utilized, i.e., from about 38,500 to about 49,000 atmospheres.
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