Comparative characteristic of zircons of upper-proterozoic deposits, the Nyarovei series and the Nemuryugan suite (Polar Urals)

Abstract

Впåðвыå пðîвåдåíà ñðàвíèòåëьíàя хàðàкòåðèñòèкà öèðкîíîв èз ìåòàîñàдî÷íых, в òîì ÷èñëå óãëåðîдñîдåðжàщèх, вåðхíåпðîòåðîзîйñкèх îòëîжåíèй íяðîвåйñкîй ñåðèè è íåìóðъюãàíñкîй ñвèòы Пîëяðíîãî Óðàëà. Èзó÷åíèå òèпîхèìè÷åñкèх îñîбåííîñòåй öèðкîíîв пîкàзàëî îòëè÷èя вî вíóòðåííåì ñòðîåíèè è хèìè÷åñкîì ñîñòàвå ìèíåðàëà. Дëя ìåòàîñàдî÷íых бåзóãëåðîдèñòых пîðîд хàðàкòåðíà ðîвíàя пîвåðхíîñòь è îдíîðîдíîå ñòðîåíèå зåðåí öèðкîíà. В öèðкîíàх èз óãëåðîдñîдåðжàщèх îòëîжåíèй вíóòðåííåå ñòðîåíèå íåîдíîðîдíîå, пðèñóòñòвóюò вòîðè÷íыå èзìåíåíèя. В óãëåðîдñîдåðжàщèх îòëîжåíèях íяðîвåйñкîй ñåðèè è íåìóðъюãàíñкîй ñвèòы в ñîñòàвå öèðкîíà îòìå÷àåòñя óðàí. Цèðкîí пåðвîíà÷àëьíî ìîã быòь îбîãàщåí óðàíîì, ëèбî îбðàзîвàíèå óðàíà в èзíà÷àëьíî дåфîðìèðîвàííых öèðкîíàх ìîãëî быòь ñвязàíî ñ ãèпåðãåííыìè пðîöåññàìè. В óãëåðîдñîдåðжàщèх îòëîжåíèях ìèíèñåйшîðñкîй ñвèòы в öèðкîíàх пîìèìî óðàíà пðèñóòñòвóюò èòòðèй, òîðèй è ñкàíдèй.

Features of production technologies of composite parts for the railway industry

“…Roller compaction not only creates molding pressure but also removes some air from the liquid binder to reduce the porosity of the material [15]. According to the type of filler, as well as the technological equipment used, contact molding is divided into three technologies: manual lay-up, automated lay-up and sputtering [14,16].…”

“…The RTM technology (figure 4) is based on the injection of a resin under pressure into a special mold with a pre-packed filler and subsequent curing [16]. The tooling is similar to the press mold -the mold consists of a punch and a die.…”

“…Since the binder channels have a small diameter, the liquid matrix must not be viscous. This makes it impossible to use thermoplastic polymers in RTM [16,3].…”