You are all cordially invited to hear Christian Poupart present his MASc seminar talk on “Control of ignition temperature in hybrid thermite-intermetallic reactive materials”. The abstract of the talk is below. The talk will start promptly at 2:30pm – the seminar form will not be available to late-comers.
Date: Friday October 31st
Room: CBY B205
Thermite and intermetallic mixtures have received renewed interest in recent years. Such reactive materials have been used since the early 1900s as welding agents for railway tracks. New technologies have recently made these compounds more attractive. This work focuses on a thermite mixture of Aluminum Copper-oxide. This reactive mixture is largely popular due to its ability to create a substantial amount of gaseous products, and a reaction front that can propagate at supersonic speeds. This compound can be used in many applications involving propellants, pyrotechnics and military. Ignition temperatures for this mixture have been reported to be approximately 660oC. This study will focus on lowering the ignition temperature of Al-CuO.
Studies have shown that by reducing particle size, and increasing surface contact of constituents, reaction kinetics can be improved dramatically. In this work we investigate the effects of arrested reactive milling (ARM) on the reaction kinetics of mixtures of Aluminum Copper-Oxide and Nickel-Aluminum. Ni-Al is a mixture called an intermetallic. Intermetallic reactions are usually gasless, and highly exothermic. Previous reports have shown that ARM significantly reduces the ignition temperature of Ni-Al. The microstructure of these compounds becomes dependent on the duration of the milling process. Mechanical milling of powders reduces the particle size, and creates a constituent interface at the sub-micron level. Ignition temperatures of Al-CuO and Ni-Al are strongly dependent on the milling time. The ignition temperature of Al-CuO was reduced to 600oC for milling time of 16 minutes. The ignition temperature of Ni-Al was reduced from 660oC down to 207oC for a milling time of 40 minutes. Hybrid mixtures of Al-CuO-Ni are then created with the milled constituents, at different concentrations. Results show that the ignition temperature of a hybrid system is dependent on the concentration of constituents. The lowest ignition temperature observed was approximately 250oC for a milled hybrid mixture containing 25% (by mass) of 16 minute milled Al-CuO and 75% milled Ni-Al.
ACS on Campus is a free outreach program dedicated to helping students, post-docs, and faculty members advance in their careers. The program brings leaders in publishing, research, science communication and career development to university campuses to present seminars and workshops focused on how to:
- Publish in top journals
- Find a job
- Effectively use research tools like SciFinder® and ACS ChemWorx
- Communicate your science
- Write grant proposals
- Build industry partnerships
- Prepare for a changing employment landscape
Complimentary food and drinks will also be provided for all registered attendees each day. Sessions are appropriate for researchers in all fields of science. You do not have to register for all of the sessions in order to attend. You are invited to come for as many of the sessions as your schedule allows.
Please visit the website for location and speaker information as well as additional details. The event is free, but registration is required in order to attend. Questions can be sent to firstname.lastname@example.org.
Here is the schedule for the events next week:
Monday, October 20, 2014
Science Café Networking Event
603 Cumberland St
Ottawa, ON K1N 7K4
6:00-6:30 pm Science Cafe Networking Event
6:30 – 7:30 pm Women in STEM Panel Discussion
7:30-8:00 pm Post-Panel Networking
Tuesday, October 21, 2014
1125 Colonel By Dr
Ottawa, ON K1S 5B6
8:30-9:00 am Breakfast, sign in, and onsite registration
9:00-9:30 am Welcome and Opening Remarks
11:00-12:00 pm Graduate Study and Research Collaboration Abroad: Trends, Best Practices, and Resources
12:00-1:00 pm Lunch and Networking Event
2:00-3:00 pm Career Pathways – Panel Discussion (Part I)
3:00 -3:15 pm Networking Break
3:15-4:15 pm Career Pathways – Panel Discussion (Part II)
Closing Remarks and Raffle
There are two FREE workshops on campus for graduate students and PDFs next week. There’s more information about the workshops if you click on the links to register.
Foundations of Project Management I – Ottawa, ON
When: Wednesday, October 15, 2014 – Thursday, October 16, 2014
Time: 9:00am – 5:00pm (Registration starts at 8:45am SHARP on Wednesday)
Where: University of Ottawa, Vanier Building
Room: VNR 1026
Link to Register: https://step.mitacs.ca/workshop/2014/10/foundations-project-management-i-ottawa-october-15-16-2014
Essentials of Productive Teams – Ottawa, ON
When: Friday, October 17, 2014
Time: 9:00am – 5:00pm (Registration starts at 8:45am SHARP)
Where: University of Ottawa, Vanier Building
Room: VNR 1042
Link to Register: https://step.mitacs.ca/workshop/2014/10/essentials-productive-teams-ottawa-october-17-2014
Guess who this is, circa 2002. 🙂
Guess who this is? 😉
Not part of our regular MCG seminar series but…interesting nonetheless! The university hosts interesting ‘Entrepreneuship Bridges’ lecture series
Come hear from Aydin Mirzaee and Eli Fathi Co-founders of FuildWare.
In addition, hear from representatives from the entrepreneurship ecosystem on and off campus about how you can get involved and get help for your start-up.
October 7, 2014 – 5:00 p.m. to 7:30 p.m. – FSS 4007.
To register: www.telfer.uOttawa.ca/bridges