摘要:
A method of making a polycrystalline diamond compact includes mixing a diamond particle feed with a binder to form a mixture, forming the mixture into a precompact, heating the pre-compact in a non-oxidizing atmosphere to substantially drive off the binder, oxidizing the pre-compact in an oxidizing atmosphere at a temperature and for a time sufficient to burn off non-diamond carbon without overoxidizing diamond, and sintering the pre-compact at high pressure and high temperature to form a polycrystalline diamond compact. The method may also include oxidizing the diamond particle feed prior to mixing with the binder.
摘要:
A method of producing incorporated marks into thermoplastics and the apparatus resulting from the method. The marking material may be applied as a coating via a number of techniques, and then incorporated into the plastic via a variety of heat sources, including a laser. The incorporated coating components may have features such as color that contrasts with the color of the surrounding substrate surface material, and/or may contain environmental indicators or tracer materials. A laser may be used to heat the coating and cause the plastic structure's surface to soften, thereby permitting the components of the coating to become physically encompassed in the plastic. Surrounding coating and/or plastic may be removed using a stronger laser or other energy-application apparatus.