SiC Ceramic

Silicon carbide bụ ụdị carbide sịntetik nwere molekul SiC.Mgbe a na-enye ike, silica na carbon na-etolitekarị na okpomọkụ dị elu karịa 2000 ° C.Silicon carbide nwere njupụta usoro iwu nke 3.18g/cm3, ike Mohs na-esote diamond, yana microhardness nke 3300kg/mm3 n'etiti 9.2 na 9.8.N'ihi ịdị elu ya na ịdị elu na-eyi akwa, ọ nwere njirimara nke nguzogide okpomọkụ dị elu ma jiri ya mee ihe dị iche iche nke na-eguzogide ọgwụ, corrosion na-eguzogide na okpomọkụ dị elu.Ọ bụ ụdị teknụzụ seramiiki ọhụrụ nke na-agaghị eyi.

1. Chemical Njirimara.

(1) Nguzogide oxidation: Mgbe ihe silicon carbide na-ekpo ọkụ na 1300 Celsius C na ikuku, oyi akwa mkpuchi silicon dioxide na-amalite imepụta n'elu kristal silicon carbide kristal.Na ndim nke oyi akwa mkpuchi, ihe dị n'ime silicon carbide na-aga n'ihu na-eme ka ọ ghara ịdị na-eme ka ọ ghara ịdị na-eme ka ọ dị mma, nke mere na silicon carbide nwere ezigbo nkwụsị oxidation.Mgbe okpomọkụ ruru ihe karịrị 1900K (1627 Celsius C), ihe nkiri nchebe silicon dioxide na-amalite imebi, na oxidation nke silicon carbide na-esiwanye ike, ya mere 1900K bụ okpomọkụ na-arụ ọrụ nke silicon carbide na ikuku oxidizing.

(2) Acid na alkali nguzogide: n'ihi ọrụ nke ihe nkiri nchebe silicon dioxide, silicon carbide nwere ihe onwunwe na ọrụ nke ihe nkiri nchebe silicon dioxide.

2. Ahụ na n'ibu Njirimara.

(1) Njupụta: The urughuru njupụta nke dị iche iche silicon carbide kristal dị nnọọ nso, n'ozuzu na-ewere na-3.20g / mm3, na eke mbukota njupụta nke silicon carbide abrasives bụ n'etiti 1.2-1.6g / mm3, dabere na urughuru size, urughuru size mejupụtara na urughuru size udi.

(2) Ike: Mohs siri ike nke silicon carbide bụ 9.2, micro-density nke Wessler bụ 3000-3300kg / mm2, ike nke Knopp bụ 2670-2815kg / mm, abrasive dị elu karịa corundum, nso diamond, cubic boron nitride na boron carbide.

(3) Thermal conductivity: ngwaahịa silicon carbide nwere nnukwu okpomọkụ conductivity, obere okpomọkụ mgbasa ọnụ ọgụgụ, elu thermal ujo na-eguzogide, na elu-edu refractory ihe.

3. Eletriki Njirimara.