Ngwa seramiiki

Ajụjụ nnabata

• Alumina seramiiki ihe

  Alumina (Al2O3) Ngwa seramiiki

• Aluminium nitride seramiiki ihe

  Aluminom nitride (AlN) ihe eji eme seramiiki

• Beryllium Oxide Ceramic Material

  Ngwa seramiiki Beryllium Oxide (BeO).

• Ngwa seramiiki ndị ọzọ

• Silicon nitride seramiiki ihe

  Silicon Nitride (Si3N4) Ngwa seramiiki

• Ihe eji eme seramiiki zirconia

  Zirconia (ZrO2) Ngwa seramiiki

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  Alumina seramiiki

  Alumina seramiiki bụ ihe seramiiki mejupụtara nke Al2O3, nke enwere ike kewaa n'ụdị ịdị ọcha dị elu na ụdị nkịtị. Alumina ceramics dị elu dị ọcha bụ ihe seramiiki nwere ọdịnaya Al2O3 karịa 99.9%. N'ihi na okpomọkụ ya dị elu dị elu dị ka 1650-1990 Celsius C na ogologo ntụgharị nnyefe bụ 1-6 μm, enwere ike iji ya dị ka ihe ntinye sekit agbakwunyere na ihe mkpuchi mkpuchi dị elu na ụlọ ọrụ eletrọnịkị. A na-ekewa seramiiki alumina nkịtị n'ime 99 poselin, 95 poselin, 90 poselin, 85 poselin na ụdị ndị ọzọ dị ka ọdịnaya Al2O3 si dị. Mgbe ụfọdụ, ndị nwere Al2O3 ọdịnaya nke 80% ma ọ bụ 75% na-nkewa dị ka nkịtị alumina seramiiki usoro. N'ime ha, a na-eji 99 alumina porcelain ihe eji eme ihe na-ekpo ọkụ na-ekpo ọkụ, tubes refractory refractory na ihe ndị pụrụ iche na-eguzogide, dị ka seramiiki bearings, seramiiki akara na mmiri valve efere, wdg; 95 alumina poselin bụ nke a na-ejikarị dị ka akụkụ na-eguzogide corrosion na eyi na-eguzogide; A na-ejikọta poselin 85 na ụfọdụ talc, nke na-eme ka ihe ọkụ eletrik na ike arụ ọrụ dịkwuo mma, enwere ike mechie ya na molybdenum, niobium, tantalum na ọla ndị ọzọ, na ụfọdụ a na-eji maka igwe ọkụ eletrik.

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  Zirconia ceramics

  Zirconia ceramics bụ ihe ọzọ dị elu seramiiki akụrụngwa, nke na-acha ọcha, odo ma ọ bụ isi awọ mgbe ọ nwere adịghị ọcha, na n'ozuzu nwere HfO2, nke na-adịghị mfe ikewa. Enwere steeti kristal atọ nke ZrO2 dị ọcha n'okpuru nrụgide nkịtị. Mmepụta nke ceramik zirconia na-achọ nkwadebe nke powders na ịdị ọcha dị elu, ezigbo dispersibility, ahụ ultrafine na nkesa nha nha nha. Ojiji nke zirconia karịrị nke alumina n'ihi na ike ya na-eme ka ọ bụrụ ihe na-eguzogide ọgwụ, na ihe ndị dị na zirconia dị ntakịrị, nke na-eme ka elu ngwaahịa na-eme ka ọ dịkwuo elu ma na-eme ka ọ dị mma maka ịme mma, pistons, ngwaahịa na-ebu, na ọbụna ọmarịcha ngwaahịa ọla. Enwere ike iji zirconia dị mma na-emepụta elekere. Mgbe a na-agbanye ntụ ntụ ma guzobe ya, a na-agbanye ya na okpomọkụ nke 1450 degrees Celsius, wee jiri ájá diamond na-ehicha ya iji mee ka elu ya na-egbuke egbuke ma dị mma. N'otu oge ahụ, ceramik zirconia bụkwa ihe akụrụngwa seramiiki zuru oke maka ịme mma ịkpụ na mma kichin.

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  Silicon nitride seramiiki

  Silicon nitride seramiiki bụ seramiiki ihe inorganic nke na-adịghị ada ada mgbe esiri ya. Silicon nitride siri ike, ọkachasị silicon nitride na-ekpo ọkụ, nke bụ otu n'ime ihe siri ike n'ụwa. Ọ nwere ike dị elu, obere njupụta, oke okpomọkụ na-eguzogide na ihe ndị ọzọ. Si3N4 ceramics bụ ihe jikọrọ ọnụ, ngalaba nhazi bụ isi bụ [SiN4] tetrahedron, atom silicon dị n'etiti tetrahedron, yana atom nitrogen anọ gbara ya gburugburu, nke dị n'otu n'otu na vertices anọ nke tetrahedron. , na mgbe atọ ọ bụla Tetrahedron ọ bụla na-ekerịta ụdị nke atọm, na-eme usoro netwọk na-aga n'ihu na nke siri ike na oghere akụkụ atọ. Isi ike ya bụ nke abụọ na diamond na cubic boron nitride, yana ọ nwere ezigbo nguzogide na arụ ọrụ mkpakọ, ebe silicon nitride bụ otu n'ime ihe ndị nwere njirimara kachasị n'etiti ihe seramiiki. Ọ na-abịa na isi awọ ma ọ bụ oji ma nwee mmecha dị ka enyo ma a na-egbu ya. A na-ejikarị n'isi igwe ụgbọ elu mbara igwe, ngwa agha ndị agha, na gyroscopes. Ọkpụkpụ siri ike nke silicon nitride na-eme ka ọ bụrụ ihe bụ isi maka ngwaahịa dị ka azụ azụ mmiri, ịgba ọsọ igwe, skate, skateboard, na ndị ọzọ.

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  Aluminom nitride ceramics

  Aluminom nitride ceramics: kristal AIN nwere njikọ chiri anya yana 〔AIN4〕 tetrahedron dị ka ngalaba nhazi, nwere ihe wurtzite ma bụrụ nke sistemu kristal hexagonal. Chemical mejupụtara AI 65.81%, N 34.19%, kpọmkwem ike ndọda 3.261g / cm3, na-acha ọcha ma ọ bụ na-acha ọcha, otu crystal colorless na transperent, sublimation decomposition okpomọkụ n'okpuru nkịtị mgbali bụ 2450 ℃. Ọ bụ ihe na-eguzogide okpomọkụ dị elu. Ọnụọgụ mgbasawanye okpomọkụ (4.0-6.0) X10-6/℃. Thermal conductivity nke polycrystalline AIN bụ 260W / (mk), nke bụ 5-8 ugboro elu karịa nke alumina, n'ihi ya, ọ nwere ezigbo thermal ujo na-eguzogide na ike iguzogide oké okpomọkụ nke 2200 ° C. Na mgbakwunye, aluminom nitride nwere njiri mara na aluminom gbazere adịghị emebi ya, ọla ndị ọzọ a wụrụ awụ na gallium arsenide, ọkachasị nwere nguzogide corrosion kacha mma na aluminom gbazere.

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  Boron nitride ceramics

  Boron nitride ceramics nwere ezigbo nguzogide okpomọkụ, nkwụsi ike nke okpomọkụ, conductivity thermal, na ike dielectric okpomọkụ dị elu, ma bụrụ ihe dị mma na-ekpo ọkụ na-ekpo ọkụ na ihe mkpuchi okpomọkụ. Boron nitride nwere ezigbo nkwụsi ike kemịkalụ ma nwee ike iguzogide corrosion nke ọtụtụ ọla a wụrụ awụ. Ọ nwekwara ezigbo mmanu mmanu mmanu. Ngwaahịa boron nitride nwere ike dị ala ma enwere ike ijikwa ya nke ọma 1/100mm. E kewara ya ụzọ abụọ: otu bụ boron nitride hexagonal, nke yiri graphite ma nwee nnukwu nguzogide okpomọkụ. A maara ya maka njirimara dị nro na nke dị nro, ma nwee ọtụtụ myirịta na graphite. Ya mere, a na-akpọkwa ya "ọcha graphite"; Nke ọzọ bụ cubic boron nitride, nke nwere ezigbo ike siri ike ma na-ejikarị egbutu, egweri na mkpọpu. A na-eji ihe nitride boron mee ihe n'ọtụtụ ebe na nyocha sayensị na mmepụta mmepụta ihe n'ihi njide ya dị mma, enweghị mgbanwe na mma mmanu.

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  Glass- ceramik

  Glass-seramik, nke a makwaara dị ka seramiki machinable, bụ seramiiki mica nke nwere mica sịntetịt dị ka akụkụ kristal bụ isi, yana ihe seramiiki nwere ike ịrụ ọrụ. Ọ nwere arụmọrụ nhazi dị mma, arụmọrụ agụụ, ihe mkpuchi ọkụ eletrik, nguzogide okpomọkụ dị elu, nguzogide corrosion chemical na ihe ndị ọzọ magburu onwe ya. Ihe kacha pụta ìhè nke processability iko-ceramics bụ na ọkọlọtọ metal nhazi ngwaọrụ na akụrụngwa nwere ike iji maka mbịne, egwe ọka, planing, egweri, sawing, igbutu na tapping, nke bụ enweghị atụ na nkịtị 95 poselin, silicon nitride poselin na ndị ọzọ mkpuchi ihe. . nke. Ọrụ nhazi nke iko-ceramics yiri nke nkedo ígwè, a pụkwara ịhazi ya n'ime ngwaahịa dị iche iche nke nwere ọdịdị dị mgbagwoju anya na ihe dị elu chọrọ. Ọ bụ ezie na iko-ceramics bụ ihe na-agbaji agbaji na ihe siri ike, ọ bụrụhaala na a na-ekpebi ụzọ nhazi na usoro clamping nke ọma, a na-elebara usoro nhazi anya, na ahọpụtara ọnụ ọgụgụ nke ịkpụ nke ọma, enwere ike ịchịkwa ọkwa nnabata nke akụrụngwa izugbe na IT7. Ọkwa, na imecha nwere ike iru 0.5 microns. A na-achịkwa izi ezi nke igwe na 0.005mm. Ọ bụrụ na akụrụngwa nhazi ahụ dị mma na onye ọrụ nwere nkà, nkenke nwere ike iru ọkwa μ. Dị ka ụdị ihe ọhụrụ dị ugbu a mepụtara, iko-ceramic nwere ihe ndị dị mma nke na-eme ka ọ na-emewanyewanye na nchọpụta sayensị na nyocha.

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