Labarai

1. Dalilin gwaji:

A ƙarƙashin yanayin samarwa na kayan aiki iri ɗaya kuma a ƙarƙashin yanayin rarraba barbashi iri ɗaya, tabbatar da bambanci iri ɗaya na samfurin lokacin da medan barbashi shine 1um, 2um da 3 kuma sa'an nan ƙayyade da izinin barbashi size hawa da sauka a samar.

2. Matakan gwaji:

  1. An zaɓi nau'in nau'in zirconia kuma an sarrafa shi cikin nau'ikan nau'ikan nau'ikan tsaka-tsaki daban-daban tare da injin Raymond, kuma an zaɓi rabon girman barbashi huɗu na d50=12.34um, 13.76um, 15.00um da 15.92um.
  2. Dangane da wannan dabarar, ana haɗe nau'ikan zirconia guda huɗu cikin kayan rawaya praseodymium, wanda aka fara harba a 920 ℃.Don yin koyi da samar da taro, dole ne a tsawaita lokacin riƙewa zuwa 1 hour.

3. Yi nazarin sakamakon harbe-harbe, yanke hukunci ko zafin harbin yana da ma'ana, kuma gano ko akwai ƙonewa.

4. Idan akwai overburning, ɗauki 15 ℃ a matsayin gradient kuma rage yawan zafin jiki na harbe-harbe a jere har sai nau'in zirconia guda huɗu ya bayyana konewa.
5. Yi rikodin mafi kyawun zafin wuta na nau'ikan zirconia guda huɗu tare da girman barbashi daban-daban.
6. Ƙayyade bambancin zafin jiki na harbe-harbe tsakanin daban-daban na tsaka-tsaki masu girma dabam.

Analysis: a cikin wadannan harbe-harbe zazzabi jeri, mafi kyau harbe-harben zafin jiki na zirconia tare da d50 = 12.34um ne game da 875 ℃, yayin da mafi kyau harbe-harben zafin jiki na zirconia tare da d50 = 13.76um ne game da 890 ~ ​​905 ℃, kuma mafi kyau harbi zazzabi na zirconia. tare da d50 = 15.00um shine kusan 905 ℃.Daga ra'ayi na abin da ya faru na konewa koren, zirconia tare da d50 = 15.00um ya bayyana a farkon.875 ℃ an kona wani bangare, kuma darajar b ta ragu zuwa 70.59.Saboda ƙarancin abun ciki na zirconium da babban aiki, zirconium da aka shigo da shi, zafin wuta yana da ƙasa sosai, kusan 860 ℃.Bayan nazarin bayanan da ke sama, hade tare da tunanin kasuwa, zazzabin harbi na kanglitai (d50=18.52um) shine 950 ℃, sannan zafin harbi na tsari 1114014 (d50=13.62um) shine 900 ℃.Lokacin da tsari na harbe-harbe na ƙarshe shine 1114013 (d50 = 15.82um), ana daidaita yawan zafin jiki zuwa 920 ℃;Lokacin da aka yi amfani da mikiya ta zinariya a ƙarshe a cikin 1122025 (d50=15.54um), ana kuma rage yawan zafin jiki daga 950 ℃ zuwa 920 ℃.

Ƙarshe:

  1. Mafi kyawun zafin jiki na zirconia yana da alaƙa kai tsaye da girman barbashi na tsakiya.Matsakaicin girman barbashi, mafi girman zafin jiki na sintering.A cikin wani nau'in rarraba girman nau'in ƙwayar cuta (13 ~ 18um), mafi kyawun zafin jiki na sintering yana raguwa da kusan 10 ℃ ga kowane raguwar 1um a cikin matsakaicin barbashi.
  2. Matsakaicin zafin jiki na CEP zirconium yana da ƙasa kuma aikin amsawa yana da kyau.Bambancin girman barbashi tsakanin CEP zirconium da zirconium na gida shine kusan 5 ~ 7um a cikin zafin jiki iri ɗaya.

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Lokacin aikawa: Jul-18-2022