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Reply To: | TechNet E-Mail Forum. |
Date: | Mon, 27 Apr 1998 10:11:58 -0500 |
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Yes, the SMTA Bookstore carries "The Mechanics of Solder Alloy Wetting and
Spreading" by Yost, Hosking and Frear; "The Mechanics of Solder Alloy
Interconnects" by Frear, Morgan, Burchett, and Lau; and ten other books
devoted to soldering (plus seventy other titles).
Feel free to contact me for details ([log in to unmask], 612-920-7682), or
check out www.smta.org.
-David
At 11:41 AM 4/25/98 EDT, you wrote:
>Hi,
>If you are dealing with high temperature solders and high temperature
>operating and concerned about fatique stength, creep, cracking etc. you must
>understand that these solders may constantly change character above 150
deg C.
>The high lead solders develop large coarse grains and cracking generally
>occurs across the grains at a much lower fatique life than first tests on the
>solder would indicate. Some of the high tin solders also have property
>changes, if thermally aged before testing. The Au80Sn20 seem to be more
>resistant but there is a phase change at 190 deg C that could also affect its
>properties. If you are going to use high temperature solders at high
>operating tempertures, it is best to age the joints for 4-8 hours at the
>operating temperature before starting you life test. See books and articles
>by Frear and Yost about some of these high temperature effects. These are
>usually available a University Science Libraries or SMTA has a bookstore that
>I think lists some of them.
>
>Phil HInton
>
>Phil Hinton
>
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SURFACE MOUNT TECHNOLOGY ASSOCIATION
Enabling members to achieve success
in surface mount and companion technologies
through education, training and access to knowledge.
5200 Willson Road, Suite 215, Edina, MN 55424-1343
612-920-7682 F 612-926-1819
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TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c
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To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body:
To subscribe: SUBSCRIBE TechNet <your full name>
To unsubscribe: SIGNOFF TechNet
################################################################
Please visit IPC web site (http://jefry.ipc.org/forum.htm) for additional information.
For the technical support contact Dmitriy Sklyar at [log in to unmask] or 847-509-9700 ext.311
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