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公开(公告)号：US4124690A
公开(公告)日：1978-11-07
申请号：US856905
申请日：1977-12-02
CPC分类号： C01B31/06 , B01J3/062 , B01J2203/061 , B01J2203/062 , B01J2203/0655 , B01J2203/068 , B01J2203/069 , B01J2203/0695
摘要： Type Ib or mixed type Ib-Ia natural diamond crystal is annealed at an annealing temperature ranging from about 1500.degree. C to about 2200.degree. C under a pressure which prevents significant graphitization of the diamond during the annealing to convert at least 20% of the total amount of type Ib nitrogen present in the crystal to type Ia nitrogen.
摘要翻译： Ib型或混合型Ib-Ia天然金刚石晶体在退火温度范围为约1500℃至约2200℃的退火温度下进行退火，该压力可防止退火期间金刚石的显着石墨化转化为总量的至少20％ I型氮存在于Ia型氮中的量。
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公开(公告)号：US4174380A
公开(公告)日：1979-11-13
申请号：US860283
申请日：1977-12-14
CPC分类号： C09K3/1418 , B01J3/062 , C30B29/04 , C30B33/00 , B01J2203/062 , B01J2203/0655 , B01J2203/069 , B01J2203/0695
摘要： Type Ib synthetic diamond crystal is annealed at an annealing temperature ranging from about 1500.degree. C. to about 2200.degree. C. under a pressure which prevents significant graphitization of the diamond during the annealing to convert at least about 20% of the total amount of type Ib nitrogen present in the crystal to type Ia nitrogen.
摘要翻译： Ib型合成金刚石晶体在退火温度范围为约1500℃至约2200℃的退火温度下进行退火，该压力防止在退火期间金刚石的显着石墨化转化为总量的至少约20％ Ib存在于晶体中以形成Ia型氮。
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3.发明授权Process for reducing stress corrosion in a weld by applying an overlay weld 失效通过施加覆盖焊缝来减少焊缝中的应力腐蚀的工艺
公开(公告)号：US4049186A
公开(公告)日：1977-09-20
申请号：US734323
申请日：1976-10-20
CPC分类号： B23K9/0216 , B23K9/048 , C21D9/50
摘要： The stress corrosion tendency of a welded pipe in service in a nuclear reactor water line is reduced by applying to the outside of the pipe a secondary weld bridging the primary weld of the joint beyond the axial extremities of the primary weld heat affected zone and particularly that part of the zone at the inner surface of the pipe.
摘要翻译： 在核反应堆水管线中使用的焊接管的应力腐蚀趋势通过向管的外侧施加桥接超过主焊接热影响区的轴向端部的接头的主焊缝的二次焊接而减少，特别是 管道内表面的一部分区域。
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