Optimizacija procesa sintranja steatitne keramike

magistrsko delo

Nik Smrkolj (Author), Marjan Marinšek (Mentor), Igor Plazl (Thesis defence commission member), Boštjan Genorio (Thesis defence commission member)

Abstract

V podjetju ETI Elektroelement d.o.o. iz različnih silikatnih keramičnih materialov kot so porcelan, steatit in kordierit, proizvajamo različne keramične izdelke. Ti izdelki se pretežno uporabljajo za izolacijo v elektrotehniki. Tako imenovane »ETI varovalke« lahko najdemo prav povsod, pri vas doma v hiši ali bloku, v industrijskih obratih, v avtomobilih, vlakih, tramvajih, v daljnovodih, transformatorjih, na področju fotovoltaike in ostalih obnovljivih virov. Eden ključnih procesov pri pripravi silikatne tehnične keramike je sintranje. S sintranjem keramične izdelke utrdimo, dobijo mehansko trdnost, odpornost na temperaturne šoke, pri tem se razvije mikrostruktura in druge značilne lastnosti. Magistrska naloga je bila izvedena v razvojnem okolju, na osnovi rezultatov študij in objavljenih raziskav, z namenom optimizacije sintranja steatitne keramike. Na podlagi analiz rezultatov raziskav smo se odločili za laboratorijske poskuse z dodatkom borovega oksida v steatitno keramiko. Borov oksid smo dodali v obliki borove kisline, ki v zmesi opravlja vlogo taline, saj ima nižjo temperaturo tališča od ostalih komponent in tako omogoča sintranje pri nižji temperaturi. Z uporabljenimi laboratorijskimi analizami smo želeli preveriti končne lastnosti takšnega keramičnega materiala. Rezultati so potrdili tehnično kakovost keramičnega materiala, vendar pa ta potrditev še ne omogoča prehoda v proizvodno fazo. Največjo oviro predstavlja cena borove kisline, ki po predkalkulacijah predstavlja prevelik strošek in bi oblikovala previsoko lastno ceno, posledično prodajna cena na trgu za trenutne izdelke ne bi bila konkurenčna.

Keywords

steatitna keramika;borov oksid;sintranje;čas in temperatura sintranja;magistrska dela;

Data

Language:	Slovenian
Year of publishing:	2023
Typology:	2.09 - Master's Thesis
Organization:	UL FKKT - Faculty of Chemistry and Chemical Technology
Publisher:	[N. Smrkolj]
UDC:	666.3:536.421.5(043.2)
COBISS:	159788291
Views:	45
Downloads:	8
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Optimization of sintering process for steatite ceramics
Secondary abstract:	In the company ETI Elektroelement d.o.o. we produce a variety of ceramic products from various silicate ceramic materials such as porcelain, steatite and cordierite. These products are mainly used for insulation in electrical engineering. The so-called "ETI fuses" can be found everywhere, at home in a house or block of flats, in industrial plants, in cars, trains, trams, in power lines, transformers, in the field of photovoltaics and other renewable sources. One of the key processes in the preparation of silicate technical ceramics is sintering. By sintering, ceramic products are hardened, they gain mechanical strength, resistance to temperature shocks, while developing a microstructure and other characteristic properties. The master's thesis was carried out in a development environment, based on the results of studies and published research, with the aim of optimizing the sintering of steatite ceramics. Based on the analysis of the research results, we decided to conduct laboratory experiments with the addition of boron oxide to steatite ceramics. Boron oxide was added in the form of boric acid, which acts as a melt in the mixture, as it has a lower melting point than the other components and thus enables sintering at a lower temperature. We wanted to check the final properties of such a ceramic material with the laboratory analyses. The results confirmed the technical quality of the ceramic material, but this confirmation does not yet allow the transition to the production phase. The biggest obstacle is the price of boric acid, which according to pre-calculations represents an excessive cost and would create an excessively high own price, as a result the sales price on the market for current products would not be competitive.
Secondary keywords:	steatite ceramics;boron oxide;time and temperature of sintering;Lojevec;Keramika;Univerzitetna in visokošolska dela;
Type (COBISS):	Master's thesis/paper
Study programme:	1000376
Embargo end date (OpenAIRE):	1970-01-01
Thesis comment:	Univ. v Ljubljani, Fak. za kemijo in kemijsko tehnologijo, smer Kemijsko inženirstvo
Pages:	49 str.
ID:	19356511