公开(公告)号：US3558488A

公开(公告)日：1971-01-26

申请号：US3558488D

申请日：1968-03-07

Applicant: NORTH AMERICAN ROCKWELL

Inventor： MANN HOWARD G

IPC: C23C24/00 ,  C10M5/02

CPC classification number: C10M7/00 ,  C10M2201/00 ,  C10M2201/061 ,  C10M2201/063 ,  C10M2201/085 ,  C10M2201/103 ,  C10M2201/105 ,  C10M2201/16 ,  C10M2201/18 ,  C10M2209/12 ,  C10N2210/01 ,  C10N2240/402 ,  C10N2240/403 ,  C10N2240/404 ,  C10N2240/405 ,  C10N2240/406 ,  C10N2240/407 ,  C10N2240/408 ,  C10N2240/409 ,  C10N2250/08 ,  C10N2250/10 ,  C10N2250/121 ,  C23C24/00

Abstract: A COMPOSITION COMPRISING A MIXTURE OF BORON NITRIDE POWDER AND COLLOIDAL SILICA IN A SUBSTANTIALLY VOLATILE CARRIER IS DESCRIBED. THIS MATERIAL IS COATED ON A BERYLLIUM SURFACE AND THE VOLATILE CARRIER EVAPORATED TO LEAVE A DRY FILM LUBRICANT. THE DRY FILM LUBRICANT IS PARTICULARLY USEFUL FOR HIGH TEMPERATURE FORMING A BERYLLIUM AND IN ADDITION PROVIDES OXIDATION PROTECTION THEREBY OBVIATING NEED FOR A PROTECTIVE ENVIRONMENT AND MINIMIZING SAFETY HAZARDS.

公开(公告)号：US3654001A

公开(公告)日：1972-04-04

申请号：US3654001D

申请日：1968-06-25

Applicant: NORTH AMERICAN ROCKWELL

Inventor： MANN HOWARD G

IPC: C23F1/30 ,  C23F1/00

CPC classification number: C23F1/30

Abstract: A process for chemical milling of beryllium and high beryllium alloys is described wherein the beryllium is subjected to an aqueous solution of an acid selected from the group consisting of sulfuric acid, oxalic acid, and ammonium acid fluoride plus sufficient hexavalent chromium ion to prevent channeling. In a preferred embodiment sulfuric acid is present in the range of 515 percent chromium ion is present in the range of 7-10 percent CrO3; sodium nitrate is present up to about 1.3 percent; and hydrofluoric acid is present up to about 2 percent.

Abstract translation: 描述了对铍和高铍合金进行化学研磨的方法，其中铍经受选自硫酸，草酸和铵酰氟加上足够的六价铬离子的酸的水溶液以防止引流。 在优选的实施方案中，硫酸存在的范围为5-15％，铬离子存在于7-10％CrO 3的范围内; 硝酸钠存在多达约1.3％; 氢氟酸的含量高达约2％。