A TG-FTIR investigation on the co-pyrolysis of the waste HDPE, PP, PS and PET under high heating conditions

2020 ◽  
Vol 93 (3) ◽  
pp. 1020-1035 ◽  
Author(s):  
R.K. Singh ◽  
B. Ruj ◽  
A.K. Sadhukhan ◽  
P. Gupta
Keyword(s):  
High Heating ◽  
Ftir Investigation

Comparing fast inductive tempering and conventional tempering: Effects on microstructure and mechanical properties

2018 ◽  
Vol 115 (4) ◽  
pp. 407 ◽  
Author(s):  
Annika Eggbauer Vieweg ◽  
Gerald Ressel ◽  
Peter Raninger ◽  
Petri Prevedel ◽  
Stefan Marsoner ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Impact Energy ◽  
Charpy Impact ◽  
Heat Treating ◽  
Processing Route ◽  
High Heating Rate ◽  
Heating Rates ◽  
High Heating ◽  
Tempering Treatment ◽  
Carbide Distribution

Induction heating processes are of rising interest within the heat treating industry. Using inductive tempering, a lot of production time can be saved compared to a conventional tempering treatment. However, it is not completely understood how fast inductive processes influence the quenched and tempered microstructure and the corresponding mechanical properties. The aim of this work is to highlight differences between inductive and conventional tempering processes and to suggest a possible processing route which results in optimized microstructures, as well as desirable mechanical properties. Therefore, the present work evaluates the influencing factors of high heating rates to tempering temperatures on the microstructure as well as hardness and Charpy impact energy. To this end, after quenching a 50CrMo4 steel three different induction tempering processes are carried out and the resulting properties are subsequently compared to a conventional tempering process. The results indicate that notch impact energy raises with increasing heating rates to tempering when realizing the same hardness of the samples. The positive effect of high heating rate on toughness is traced back to smaller carbide sizes, as well as smaller carbide spacing and more uniform carbide distribution over the sample.

Investigations on High Heating Rate and Precision Calibration of the Thermoelectric Characteristics of the Tool and Work Materials

CIRP Annals ◽  
1983 ◽  
Vol 32 (1) ◽  
pp. 47-51 ◽  
Author(s):  
H.J. Xu ◽  
X.C. Tong ◽  
X.S. Zhao ◽  
Y.Z. Zhang ◽  
J. Peklenik
Keyword(s):  
Heating Rate ◽  
High Heating Rate ◽  
High Heating

Rate Equation Modeling, Ab Initio Calculation, and High Sensitive FTIR Investigations of the Early Stages of Oxide Precipitation in Vacancy-Rich CZ Silicon

2009 ◽  
Vol 156-158 ◽  
pp. 211-216 ◽  
Author(s):  
G. Kissinger ◽  
J. Dabrowski ◽  
V.D. Akhmetov ◽  
Andreas Sattler ◽  
D. Kot ◽  
...  
Keyword(s):  
Ab Initio ◽  
Rate Equation ◽  
Ab Initio Calculation ◽  
Equation Modeling ◽  
Interstitial Oxygen ◽  
Czochralski Silicon ◽  
Early Stages ◽  
Highly Sensitive ◽  
Defect Species ◽  
Ftir Investigation

The results of highly sensitive FTIR investigation, ab initio calculations and rate equation modeling of the early stages of oxide precipitation are compared. The attachment of interstitial oxygen to VOn is energetically more favorable than the attachment to On for n  6. For higher n the energy gain is comparable. The point defect species which were detected by highly sensitive FTIR in high oxygen Czochralski silicon wafers are O1, O2, O3, and VO4. Rate equation modeling for I, V, On and VOn with n = (1..4) also yields O1, O2, O3 to appear with decreasing concentration and VO4 as that one of the VOn species which would appear in the highest concentration after RTA.

Metal oxide nanoparticles formed from solution droplets under high heating rate

2012 ◽  
Vol 43 ◽  
pp. 23-31 ◽  
Author(s):  
Francesco Carbone ◽  
Alberto C. Barone ◽  
Federico Beretta ◽  
Andrea D’Anna
Keyword(s):  
Metal Oxide ◽  
Heating Rate ◽  
Metal Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
High Heating Rate ◽  
High Heating

Effect of low and high heating rates on reaction path of Ni(V)/Al multilayer

2017 ◽  
Vol 193 ◽  
pp. 244-252 ◽  
Author(s):  
Łukasz Maj ◽  
Jerzy Morgiel ◽  
Maciej Szlezynger ◽  
Piotr Bała ◽  
Grzegorz Cios
Keyword(s):  
Reaction Path ◽  
Heating Rates ◽  
High Heating

High-Resolution FTIR Investigation of the ν2 Band of KrF2 and XeF2

1994 ◽  
Vol 164 (1) ◽  
pp. 84-96 ◽  
Author(s):  
H. Burger ◽  
S.Y. Ma ◽  
B.P. Winnewisser
Keyword(s):  
High Resolution ◽  
Ftir Investigation

scholarly journals High heating rate sintering and microstructural evolution assessment using the discrete element method

Open Ceramics ◽  
2021 ◽  
Vol 8 ◽  
pp. 100182
Author(s):  
Mirele Horsth Paiva Teixeira ◽  
Vasyl Skorych ◽  
Rolf Janssen ◽  
Sergio Yesid Gómez González ◽  
Agenor De Noni Jr ◽  
...  
Keyword(s):  
Discrete Element Method ◽  
Heating Rate ◽  
Microstructural Evolution ◽  
Discrete Element ◽  
High Heating Rate ◽  
High Heating ◽  
Element Method

A FUNDAMENTAL STUDY ON THE COMBUSTION CHARACTERISTICS OF MUNICIPAL WASTE PLASTICS UNDER HIGH HEATING RATES

1995 ◽  
Author(s):  
Θωμαή Παναγιώτου
Keyword(s):  
Combustion Characteristics ◽  
Municipal Waste ◽  
Waste Plastics ◽  
Heating Rates ◽  
Fundamental Study ◽  
High Heating

ΑΥΤΗ Η ΕΡΓΑΣΙΑ ΕΙΝΑΙ ΜΙΑ ΒΑΣΙΚΗ ΕΡΕΥΝΑ ΕΠΑΝΩ ΣΤΗΝ ΚΑΥΣΗ ΠΛΑΣΤΙΚΩΝ ΠΟΥ ΒΡΙΣΚΟΝΤΑΙ ΣΤΑ ΑΠΟΡΡΙΜΑΤΑ (ΠΟΛΥ-ΣΤΥΡΕΝΙΟ (PS), ΠΟΛΥ-ΕΘΥΛΕΝΙΟ (ΡΕ) ΚΑΙ PVC). ΣΦΑΙΡΙΚΑ ΣΩΜΑΤΙΔΙΑ ΠΛΑΣΤΙΚΩΝ ΙΣΟΥ ΜΕΓΕΘΟΥΣ ΔΗΜΙΟΥΡΓΗΘΗΚΑΝ ΣΤΟ ΕΡΓΑΣΤΗΡΙΟ ΚΑΙ ΚΑΗΚΑΝ ΕΝΑ, ΕΝΑ ΣΕ ΗΛΕΚΤΡΙΚΟ ΦΟΥΡΝΟ ΚΑΙ ΘΕΡΜΟΚΡΑΣΙΕΣ 1040 -1400 Κ. Η ΚΑΥΣΗ ΤΩΝ ΣΩΜΑΤΙΔΙΩΝ ΜΕΛΕΤΗΘΗΚΕ ΜΕ ΕΝΑ ΤΡΙΧΡΩΜΑΤΙΚΟ ΠΥΡΟΜΕΤΡΟ ΚΑΙ ΜΙΑ ΥΨΗΛΗΣ ΤΑΧΗΤΗΤΑΣ ΚΙΝΗΜΑΤΟΓΡΑΦΙΚΗ ΜΗΧΑΝΗ, ΩΣΤΕ ΝΑ ΣΥΛΛΕΧΘΟΥΝ ΟΙ ΕΞΗΣ ΠΛΗΡΟΦΟΡΙΕΣ: Α) Ο ΧΡΟΝΟΣ ΤΗΣ ΚΑΥΣΗΣ, Β) ΤΟ ΕΙΔΟΣ ΤΗΣ ΚΑΥΣΗΣ (ΟΜΟΙΟΓΕΝΗΣ Η ΕΤΕΡΟΓΕΝΗΣ), Γ) ΤΟ ΠΑΧΟΣ ΤΗΣ ΦΛΟΓΑΣ ΚΑΙ Δ) Η ΤΑΧΥΤΗΤΑ ΠΤΩΣΗΣ ΤΩΝ ΣΩΜΑΤΙΔΙΩΝ. ΟΙ ΠΛΗΡΟΦΟΡΙΕΣ ΑΥΤΕΣ ΧΡΗΣΙΜΟΠΟΙΗΘΗΚΑΝ ΓΙΑ ΤΟΝ ΥΠΟΛΟΓΙΣΜΟ ΤΗΣ ΣΤΙΓΜΙΑΙΑΣ ΠΕΡΙΕΚΤΙΚΟΤΗΤΑΣ ΤΗΣ ΦΛΟΓΑΣ ΣΕ ΑΙΘΑΛΗ ΚΑΙ ΤΗΣ ΠΡΩΤΕΥΟΥΣΑΣ ΦΥΣΙΚΗΣ ΚΑΙ ΧΗΜΙΚΗΣ ΔΙΕΡΓΑΣΙΑΣ ΚΑΤΑ ΤΗΝ ΚΑΥΣΗ ΤΩΝ ΣΩΜΑΤΙΔΙΩΝ. ΚΑΘΕ ΥΛΙΚΟ ΠΑΡΟΥΣΙΑΣΕ ΜΟΝΑΔΙΚΑ ΧΑΡΑΚΤΗΡΙΣΤΙΚΑ ΚΑΥΣΗΣ. ΟΙ ΦΛΟΓΕΣ ΤΩΝ PVC ΣΩΜΑΤΙΔΙΩΝ ΕΙΧΑΝ ΤΗΝ ΜΕΓΑΛΥΤΕΡΗ ΠΕΡΙΕΚΤΙΚΟΤΗΤΑ ΣΕ ΑΙΘΑΛΗ, ΕΝΩ ΤΩΝ ΡΕ ΤΗΝ ΜΙΚΡΟΤΕΡΗ. Η ΤΑΧΥΤΗΤΑ ΚΑΥΣΗΣ ΤΩΝ PS ΣΩΜΑΤΙΔΙΩΝ ΒΡΕΘΗΚΕ ΟΤΙ ΕΞΑΡΤΑΤΑΙ ΑΠΟ ΤΗΝ ΤΑΧΥΤΗΤΑ ΔΙΑΧΥΣΗΣ ΣΤΗΝ ΑΕΡΙΑ ΦΑΣΗ, ΕΝΩ ΤΩΝ ΡΕ ΑΠΟ ΤΗΝ ΤΑΧΥΤΗΤΑ ΠΥΡΟΛΥΣΗΣ ΤΩΝ ΣΩΜΑΤΙΔΙΩΝ. Η ΑΝΑΦΛΕΞΗ ΤΩΝ PVC ΣΩΜΑΤΙΔΙΩΝ ΕΜΠΟΔΙΣΤΗΚΕ ΑΠΟ ΤΗΝ ΥΠΑΡΞΗ ΤΗΣ ΧΛΩΡΙΝΗΣ ΠΟΥ ΔΙΕΦΥΓΕ ΑΡΧΙΚΑ. ΟΤΑΝ Η ΚΑΥΣΗ ΑΡΧΙΣΕ, ΔΗΜΙΟΥΡΓΗΘΗΚΕ ΜΙΑ ΠΑΧΙΑ ΚΑΙ ΠΡΟΑΝΑΜΙΓΜΕΝΗ ΦΛΟΓΑ ΓΥΡΩΑΠΟ ΤΟ ΣΩΜΑΤΙΔΙΟ.

Sign in / Sign up

Export Citation Format

Share Document