title: Properties and fabrication of nanostructured 2Cr-Al₂O₃ composite for prosthetic bearing replacements.
abstract: Cr2O3 and Al powder were used as raw powders, and were milled by the high energy ball milling method. The nanostructured 2Cr-Al2O3 composite from the milled powder was both synthesized and densificated within a short time, by the pulsed current activated sintering (PCAS) apparatus. The relative density of the sintered 2Cr-Al2O3 composite was 99%. The hardness and the fracture toughness of the specimen were 1630 kg/mm(2), and 9.3 MPa·m(1/2), respectively. The weight loss of the composite was measured by a pin-on-disk type apparatus, without a lubricant. Lastly, the 2Cr-Al2O3 composite has a very good cell viability.
authors.affiliation: Division of Advanced Materials Engineering, The Research Center of Advanced Materials Development, Chonbuk National University, 664-14 Deokjin-dong 1-ga, Deokjin-gu, Jeonju, Jeonbuk 561-756, Republic of Korea.
authors.forename: Na-Ra
authors.initials: NR
authors.lastname: Park
authors.affiliation: Division of Advanced Materials Engineering, The Research Center of Advanced Materials Development, Chonbuk National University, 664-14 Deokjin-dong 1-ga, Deokjin-gu, Jeonju, Jeonbuk 561-756, Republic of Korea. Electronic address: ijshon@chonbuk.ac.kr.
authors.forename: In-Jin
authors.initials: IJ
authors.lastname: Shon
mesh_terms: D000537:Aluminum Oxide / Q000737:chemistry*; D000818:Animals; D001672:Biocompatible Materials / Q000737:chemistry* / Q000494:pharmacology; D002460:Cell Line; D002470:Cell Survival / Q000187:drug effects; D017608:Chromium Compounds / Q000737:chemistry*; D006244:Hardness; D008422:Materials Testing; D051379:Mice; D008855:Microscopy, Electron, Scanning; D049329:Nanostructures / Q000737:chemistry* / Q000633:toxicity; D013696:Temperature; D014961:X-Ray Diffraction
chemical_list: D001672:Biocompatible Materials; D017608:Chromium Compounds; D000537:Aluminum Oxide; C023600:chromic oxide
keywords: Cell viability; Composite; Mechanical properties; Nanomaterials; Sintering