I am searching my database for a variety of documents and one that should be retrieved isn't and is found below:
ABST
A method of and novel composition for transient liquid phase bonding of
refractory metal structures is described herein. Preferably, the
composition comprises a first component substantially similar to the
composition of the refractory metal structure, and a second component
having a lower melting temperature than the first component comprising a
metallic constituent selected from the group consisting of iron, nickel
and cobalt. The second component acts as a melting point depressant to
temporarily lower the melting point of the first component so that the
join can be accomplished without melting the structure itself. Upon
applying the composition to the surfaces of refractory metal structures in
need of joining, the assembly is heated to a eutectic point defined as the
lowest melting point of the composition. A localized liquid region is
formed at the interface of the two structures which solidifies when the
second component diffuses into the structures such that the region becomes
increasingly refractory thereby solidifying into a substantially
refractory joint.
CLMS
The search string that I am using is as follows:
+refractor* +JOIN @0 agent process technique method form* produce* intimate part parts interface material densification dissimiliar assembly member component article structure construction section element surface system layer article operation zone procedur* piece relationship shape W/\RABST W/\RCLMS
My system allows me to directly date restrict the search to the date of the document. When I do that, I get zero search results unless I delete most of the terms in the search string following the @0. As I add back the terms, there is a point when the document is no longer found. If I rearrange the terms, then the number of terms that can exist changes before the document is once again not found.
ANy suggestions?
ABST
A method of and novel composition for transient liquid phase bonding of
refractory metal structures is described herein. Preferably, the
composition comprises a first component substantially similar to the
composition of the refractory metal structure, and a second component
having a lower melting temperature than the first component comprising a
metallic constituent selected from the group consisting of iron, nickel
and cobalt. The second component acts as a melting point depressant to
temporarily lower the melting point of the first component so that the
join can be accomplished without melting the structure itself. Upon
applying the composition to the surfaces of refractory metal structures in
need of joining, the assembly is heated to a eutectic point defined as the
lowest melting point of the composition. A localized liquid region is
formed at the interface of the two structures which solidifies when the
second component diffuses into the structures such that the region becomes
increasingly refractory thereby solidifying into a substantially
refractory joint.
CLMS
The search string that I am using is as follows:
+refractor* +JOIN @0 agent process technique method form* produce* intimate part parts interface material densification dissimiliar assembly member component article structure construction section element surface system layer article operation zone procedur* piece relationship shape W/\RABST W/\RCLMS
My system allows me to directly date restrict the search to the date of the document. When I do that, I get zero search results unless I delete most of the terms in the search string following the @0. As I add back the terms, there is a point when the document is no longer found. If I rearrange the terms, then the number of terms that can exist changes before the document is once again not found.
ANy suggestions?
