دراسة تحليلية بطرائق حيود الأشعة السينية و فحص الصلادة لسبيكة رصاص-قصدير

الملخص EN

Structural and mechanical properties for lead-tin alloy have been studied by employing the X-Ray diffraction methods and Vickers microhardness test.

Three samples were obtained, the first standard lead- tin sample, the second form recyleled ingot of the alloy and the third prepared from the powder of recyeled ingot that was vacuum capsuled and treated at 800 oC for 3 hours.The X-Ray diffraction spectra of both recycled ingot and prepared alloy showed the appearance of a new stable phase of tin oxide (SnO) with the tin (Sn) phase appear in preferred orientation dictated by the technical route of preparation.

Furthermore the grain size of lead and tin phases were nearly identical though in the tin oxide phase, the grain size decreases to half of that to lead and tin due to the defective nature of the SnO phase.

Microhardness test on the three samples reveal an increase in the mechanical strength as a result of the presence of tin oxide phase that acts as a mechanical strengthener via dispersion strengthening.