Microstructure and performance of Nb-bearing Ni60A-Cr3C2 coatings manufactured by laser cladding - Details

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Abstract：

The　Ni60A-Cr3C2　coatings　with　different　Nb　addition　were　prepared　by　laser　cladding.　The　microstructure　was　observed　by　SEM　and　TEM.　The　chemical　composition　of　phases　was　studied　by　X-ray　diffractometer　and　Electron　Probe　Micro-analyzer　(EPMA).　Microhardness　and　wear　behaviour　were　measured　by　microhardness　tester　and　wear　tester,　respectively.　The　results　show　that　the　main　phases　in　Ni60A-Cr3C2　coating　are　gamma-Ni,　Cr7C3,　Cr23C6,　Ni3Si2,　Ni3B　and　CrB.　With　Nb　addition,　the　NbC　phase　appears　in　the　coatings.　The　size　and　volume　fraction　of　NbC　increase　with　the　increase　of　Nb　addition.　The　hardness　and　wear　resistance　increase　first　and　then　decrease　with　the　increase　of　Nb　addition.　The　micro-hardness　of　coatings　with　2　wt-%　Nb　addition　is　the　highest,　reaching　1046.6　Hv0.2.　The　relative　abrasive　resistance　of　coatings　with　3　wt-%　Nb　addition　is　the　best,　and　is　2.33　times　that　of　Nb-free　coatings.

Keyword：

abrasive resistance microstructure Laser cladding Ni60A-Cr3C2 coatings Nb addition micro-hardness

Author Community：

[ 1 ] [Ping, Xue-Long]Beijing Univ Technol, Res Inst Adv Mat Proc Technol, Key Lab Adv Funct Mat, Minist Educ, 100 Pingle Garden, Beijing 100124, Peoples R China
[ 2 ] [Fu, Han-Guang]Beijing Univ Technol, Res Inst Adv Mat Proc Technol, Key Lab Adv Funct Mat, Minist Educ, 100 Pingle Garden, Beijing 100124, Peoples R China
[ 3 ] [Sun, Shu-Ting]Beijing Univ Technol, Res Inst Adv Mat Proc Technol, Key Lab Adv Funct Mat, Minist Educ, 100 Pingle Garden, Beijing 100124, Peoples R China
[ 4 ] [Lin, Jian]Beijing Univ Technol, Res Inst Adv Mat Proc Technol, Key Lab Adv Funct Mat, Minist Educ, 100 Pingle Garden, Beijing 100124, Peoples R China
[ 5 ] [Guo, Xing-Ye]Beijing Univ Technol, Res Inst Adv Mat Proc Technol, Key Lab Adv Funct Mat, Minist Educ, 100 Pingle Garden, Beijing 100124, Peoples R China
[ 6 ] [Lei, Yong-Ping]Beijing Univ Technol, Res Inst Adv Mat Proc Technol, Key Lab Adv Funct Mat, Minist Educ, 100 Pingle Garden, Beijing 100124, Peoples R China

Reprint Author's Address：

符寒光
[Fu, Han-Guang]Beijing Univ Technol, Res Inst Adv Mat Proc Technol, Key Lab Adv Funct Mat, Minist Educ, 100 Pingle Garden, Beijing 100124, Peoples R China

Email：

fhg64@263.net

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Related Keywords：

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Source ：

SURFACE ENGINEERING

ISSN： 0267-0844

Year： 2019

Issue： 12

Volume： 36

Page： 1294-1306

2 . 8 0 0

JCR@2022

ESI Discipline： MATERIALS SCIENCE;

ESI HC Threshold：211

Cited Count：

WoS CC Cited Count： 16

SCOPUS Cited Count： 16

ESI Highly Cited Papers on the List： 0 Unfold All

WanFang Cited Count：

Chinese Cited Count：

30 Days PV： 4

Affiliated Colleges：

材料科学与工程学院本学院/部未明确归属的数据

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