ذرات TiC در ماتریکس Ti-6Al-4V، بزرگنمایی ۵۰۰X

تصویر میکروسکوپ نوری از کامپوزیت زمینه فلزی  Ti-6Al-4V با ذرات سخت TiC

TiC particles in a Ti-6Al-4V Matrix, 500X (polarized light),

Attack polish with H2O2/ Kroll’s reagent (photo courtesy of Medtronic).

Description:
Metal Injection Molding (MIM) is a manufacturing process which combines the technology of powder metallurgy and plastic injection molding in order to produce complex parts. When combined with ceramic particles, these parts also become very hard and wear resistant. Metal injection molded parts have very high densities (up to 98% density of wrought metal) and has a broad range of applications, including medical, dental, firearms, aerospace and automotive components.

Preparation Challenge:
Hard particles in a metal matrix can be difficult to microstructurally prepare because of particle pull-out, as well as excessive polishing relief between the hard particles and the softer matrix.

MOUNTING
Castable mounting with epoxies and acrylics

ETCHING
Use the recommended etchant for the metal matrix component.

منبع:

Zipperian, D. (2011). METALLOGRAPHIC HANDBOOK. USA:PACE Technologies.

نویسنده مطلب: metadmin

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