| Autor: |
Withers, J.C., Storm, R., Shapovalov, V., Loutfy, R.O. |
| Předmět: |
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| Zdroj: |
Materials & Manufacturing Processes; Aug2012, Vol. 27 Issue 8, p878-881, 4p, 2 Color Photographs, 1 Black and White Photograph, 2 Diagrams |
| Abstrakt: |
Titanium alloys offer the potential to reduce weight by over 40% over steel. However, applying a reliable liner coating to a titanium barrel has not been demonstrated, which is a major reason titanium barrels have not replaced steel barrels. Titanium carbonitride (TiCN) coatings on cutting tools are among the hardest ceramics and possess low coefficient of friction, which is desirable properties for a gun barrel liner. It has been demonstrated possible to build gun barrels from the inside out utilizing a mandrel with reverse rifling which provides the opportunity to produce a TiCN surface functionally graded into the titanium barrel structure. Such a barrel will save approximately 40% weight over steel barrels and with the TiCN liner there is potential to provide infinite barrel life independent of the propellant and projectile. A plasma transferred arc (PTA) rapid manufacturing process can produce the titanium barrel structure in the range of $6–9/lb resulting in cost effective titanium gun barrels. [ABSTRACT FROM PUBLISHER] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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