ISSN:
1662-9752
Quelle:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Thema:
Maschinenbau
Notizen:
16 different lanthanum-aluminosilicate glasses were prepared to evaluate the effect ofalkalis (Na2O, K2O) and alkaline earths (MgO, CaO) on thermal expansion coefficients (CTEs) of theglasses. Analysis was performed with an aid of the Taguchi method and orthogonal arrays to elucidatefour factor interactions between 4 two-level factors using two level L16(215) orthogonal arrays. Theobserved CTEs were in the range of 6.29×10-6 C-1 to 8.22×10-6 C-1. The addition of alkalis was moreinfluential to CTE of the glass than that of alkaline earth, however, co-addition of the mixed alkaliswas detrimental to CTEs of the glasses due to the crystallization caused by the mixed alkali effect.However, the highest strength of the glass infiltrated alumina composite was observed at a CTE of6.4×10-6 C-1 due to the compressive stress caused by the thermal mismatch, indicating that CTEdifference between the glass and the alumina should be above 1.0×10-6 C-1
Materialart:
Digitale Medien
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/08/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.449-452.1193.pdf
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