Influence of head-tip morphology on contact properties for microconnector of Ni–Co alloy

To examine experimentally the influence of head-tip morphology on electrical and mechanical properties at the contact with a phosphor bronze, cantilevertype microconnectors of Ni–Co alloys were prepared by an electroplating technique. Here, the mol fraction y of Co in the Ni–Co alloy is 0.178,...

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Main Authors:	Bhuiyan, M. M. I., Quadri, H. A., Bhuiyan, Moinul, Kajihara, M.
Format:	Article
Language:	English
Published:	Springer New York 2013
Subjects:	TK Electrical engineering. Electronics Nuclear engineering
Online Access:	http://irep.iium.edu.my/31683/ http://irep.iium.edu.my/31683/ http://irep.iium.edu.my/31683/ http://irep.iium.edu.my/31683/1/influence.pdf

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recordtype	eprints
spelling	iium-316832013-09-14T06:04:27Z http://irep.iium.edu.my/31683/ Influence of head-tip morphology on contact properties for microconnector of Ni–Co alloy Bhuiyan, M. M. I. Quadri, H. A. Bhuiyan, Moinul Kajihara, M. TK Electrical engineering. Electronics Nuclear engineering To examine experimentally the influence of head-tip morphology on electrical and mechanical properties at the contact with a phosphor bronze, cantilevertype microconnectors of Ni–Co alloys were prepared by an electroplating technique. Here, the mol fraction y of Co in the Ni–Co alloy is 0.178, 0.204, 0.233 and 0.299. Among these alloys, the Vickers hardness is HV = 510, 518, 525 and 478 for y = 0.178, 0.204, 0.233 and 0.299, respectively. Since the Vickers hardness is the maximum for y = 0.233, the Ni–0.233Co alloy may indicate the best wear-resistance. The loading and unloading manipulations were repeated to measure electrical resistance at the mechanical contact between the Ni–0.233Co microconnector and the phosphor bronze up to 103 times. The repetitive measurement was conducted for microconnectors with thickness of 45 lm and head-tip curvature radii of r = 5, 25, 50 and 200 lm. Even at the initial repetition, the reliable electrical contact is actualized for r = 5 lm but not for r = 25–200 lm. The experimental result was quantitatively analyzed using a mechanical model. The analysis provides that the impression depth z of the headtip into the phosphor bronze at the contact is mostly Springer New York 2013-04 Article PeerReviewed application/pdf en http://irep.iium.edu.my/31683/1/influence.pdf Bhuiyan, M. M. I. and Quadri, H. A. and Bhuiyan, Moinul and Kajihara, M. (2013) Influence of head-tip morphology on contact properties for microconnector of Ni–Co alloy. Journal of Materials Science: Materials in Electronics, 24 (9). pp. 3175-3182. ISSN 0957-4522 http://dx.doi.org/10.1007/s10854-013-1224-0 doi:10.1007/s10854-013-1224-0
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
topic	TK Electrical engineering. Electronics Nuclear engineering
spellingShingle	TK Electrical engineering. Electronics Nuclear engineering Bhuiyan, M. M. I. Quadri, H. A. Bhuiyan, Moinul Kajihara, M. Influence of head-tip morphology on contact properties for microconnector of Ni–Co alloy
description	To examine experimentally the influence of head-tip morphology on electrical and mechanical properties at the contact with a phosphor bronze, cantilevertype microconnectors of Ni–Co alloys were prepared by an electroplating technique. Here, the mol fraction y of Co in the Ni–Co alloy is 0.178, 0.204, 0.233 and 0.299. Among these alloys, the Vickers hardness is HV = 510, 518, 525 and 478 for y = 0.178, 0.204, 0.233 and 0.299, respectively. Since the Vickers hardness is the maximum for y = 0.233, the Ni–0.233Co alloy may indicate the best wear-resistance. The loading and unloading manipulations were repeated to measure electrical resistance at the mechanical contact between the Ni–0.233Co microconnector and the phosphor bronze up to 103 times. The repetitive measurement was conducted for microconnectors with thickness of 45 lm and head-tip curvature radii of r = 5, 25, 50 and 200 lm. Even at the initial repetition, the reliable electrical contact is actualized for r = 5 lm but not for r = 25–200 lm. The experimental result was quantitatively analyzed using a mechanical model. The analysis provides that the impression depth z of the headtip into the phosphor bronze at the contact is mostly
format	Article
author	Bhuiyan, M. M. I. Quadri, H. A. Bhuiyan, Moinul Kajihara, M.
author_facet	Bhuiyan, M. M. I. Quadri, H. A. Bhuiyan, Moinul Kajihara, M.
author_sort	Bhuiyan, M. M. I.
title	Influence of head-tip morphology on contact properties for microconnector of Ni–Co alloy
title_short	Influence of head-tip morphology on contact properties for microconnector of Ni–Co alloy
title_full	Influence of head-tip morphology on contact properties for microconnector of Ni–Co alloy
title_fullStr	Influence of head-tip morphology on contact properties for microconnector of Ni–Co alloy
title_full_unstemmed	Influence of head-tip morphology on contact properties for microconnector of Ni–Co alloy
title_sort	influence of head-tip morphology on contact properties for microconnector of ni–co alloy
publisher	Springer New York
publishDate	2013
url	http://irep.iium.edu.my/31683/ http://irep.iium.edu.my/31683/ http://irep.iium.edu.my/31683/ http://irep.iium.edu.my/31683/1/influence.pdf
first_indexed	2023-09-18T20:45:50Z
last_indexed	2023-09-18T20:45:50Z
_version_	1777409668656660480

Influence of head-tip morphology on contact properties for microconnector of Ni–Co alloy

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