Structure and mechanical properties of TiB 2 /TiC – Ni composites fabricated by pulse plasma sintering method

Konrad Cymerman , Dariusz Oleszak , Marcin Rosiński , Andrzej Michalski

Abstract

TiB2/TiC – Ni composites were synthesized starting from the powders of Ti, B4C and Ni, using Pulse Plasma Sintering (PPS) method. Typically used one - step (1100°C–10 min.) and novel double-step sintering processes (900°C–10 min. +1100°C–5 min.) were applied and compared. XRD studies showed that the composite obtained by double-step sintering consisted of TiB2, TiC and Ni phases. For one-step pro-cessing additionally undesired Ni3B and graphite were detected. SEM observations revealed dark-grey grains of TiB2, light-grey grains of TiC (both around 25 mm in size) and Ni areas surrounded by TiC. The composites synthesized in one - and double - step processes revealed the hardness and relative density of 2335 HV5 (±110) and 97.8% and 2470 HV5 (±70) and 99.8%, respectively. Novel double - step sintering process allowed to avoid undesired phases (graphite, Ni3B) and only TiB2, TiC and Ni were present in the structure. Additionally it was possible to decrease the temperature of the process comparing to other fabrication methods.
Author Konrad Cymerman (FMSE / DCFM)
Konrad Cymerman,,
- Division of Construction and Functional Materials
, Dariusz Oleszak (FMSE / DCFM)
Dariusz Oleszak,,
- Division of Construction and Functional Materials
, Marcin Rosiński - [GeniCore]
Marcin Rosiński,,
-
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, Andrzej Michalski (FMSE / DCFM)
Andrzej Michalski,,
- Division of Construction and Functional Materials
Journal seriesAdvanced Powder Technology, ISSN 0921-8831, (A 30 pkt)
Issue year2018
Vol29
No8
Pages1795-1803
Publication size in sheets0.5
Keywords in Polishkompozyty TiB2/TiC – Ni, spiekanie, impulsowe spiekanie plazmowe
Keywords in EnglishTiB2/TiC – Ni composites, sintering, pulse plasma sintering
ASJC Classification2211 Mechanics of Materials; 1500 General Chemical Engineering
DOIDOI:10.1016/j.apt.2018.04.015
Languageen angielski
File
art_1.pdf 1.28 MB
Score (nominal)30
ScoreMinisterial score = 30.0, 30-07-2019, ArticleFromJournal
Publication indicators Scopus Citations = 4; WoS Citations = 3; Scopus SNIP (Source Normalised Impact per Paper): 2017 = 1.206; WoS Impact Factor: 2017 = 2.943 (2) - 2017=2.853 (5)
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